Manufacture of paper yarn.



. J. THAME.

MANUFACTURE OF PAPER YARN. APPLICATION FILED FEB-11.1915- Patented May 7, 1918.

2 SHEETS-SHEET l- LJILTLIF TKOIOIO 0110,

lnvenfioh' Jwmes True, 3 I M 9;

J. THAME.

MANUFACTURE OF PAPER YARN.

APPLICATION FILED FEB. 1 1, 1915- m Patented May 1, 1918.

2 SHEETSSHEET 2.

A ttes/t Inventor",- WO A7OMVVJ James me, we. @1 61 %%M% agencies."

' Janus rnnirn, or Lennon, Janet ii a MANUFACTUEE 01F PER, It: I

To all whom may concern Be it known that l, JAMEs THnME, a subject of the King of Great Britain and lre- I land, residing at London, England, have invented new and useful lmprovementsin the Manufacture of Paper Yarn, of which the following is aspecification.

producing paper .yarn as hereinafter detill all

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scribed.

To carry the invention into efi'ect ll take paper pulp, preferably that known as long stud, which ll feed onto the wet endof a paper making machine. During the feeding of the pulp-upon the machine, it is divided into streams of the desired width say for example from 5 to millimeters by means of suitable devices ed at and in proximity to thefeeding end of the wire apron on the paper malm ng machine.

I Each stream is kept to the desired width during its travel on the wire apron by means of suitably shaped deckles constructed as an endless bandfland' traveling in contact with and. in the same direction as the wire.

After passing over the vacuum box .or boxes and the press roll, the streams of pulp which have now become strips of partially dry paper are fed between feltcovered rolls. The bottom roll-is made to revolve with and at the same peripheral speed as the top felt covered roll. The eflect of this action is to produce a consolidated paper strip which is then twisted in its moist consolidated state and subsequently passed around one or more heated cylinders or e uivalently is festooned in a heated drying c amber or arranged to be in contact with heated surfaces for such a time as will enable the material to become sulliciently dry so that it can be twisted u on itself in the form of a yarn. The resi ual moisture in the twisted yarn can be extracted by passing it over heated cylinders or like devices as it leaves the twisting mechanism .and prior to being reeled. In case it is desirable to increase the strength of the paper yarn ll simultaneously feed on with the pulp on the wet end of the paper making machine a certain quantity of long fiber such as jute or hemp by means of suitable mecham in such a way that the long fiber Specification of Letters Patent.

Patented llfay h, li ht Application filed February ii, ieit. Serial in. "rear.

becomes embedded into andforms'part ofthe paper strength.

In order that .the invention may be the better understood T will now proceed to deyarn and this increases its tensile scribe the same in relation to the accompanying drawings, reference being bad to the letters and figures marked thereon. Like letters, refer to like parts in the various figures, in which Figures 1 and3,together constitute a diagrammatic side elevation of a machine constructed to carry out my invention.

Fig. 5 is a detail view ofthe dividing devices to an enlarged scale.

Upon an ordinary paper making machine a l arrange a series of dividing devices 7) adjacent to the wire apron c spaced so as to leave a passage d between each pair of devices h. The front ends of the devices 6 are wedge shaped and the ll-shaped spaces are arranged to be fed with pul from the stud box e at a uniform level t rough the orifices f, the level being maintained constant by means of an overflow 9. Un the a number of endless rubber bands or deckles it supported by rollers j and drivenby'frictional contact with the wire apron c. The series of deckles it are mounted a certain distance apart and are of such a width that they just pass between plates 3 mounted on the sides of the dividingdevices h. Where the deckles h and wire apron c meet one another the plates Z form a channel and prevent the pul from passing between the outer part of the deckles it and the wire apron c, and at the same time train the stream of pulp drawn in by the co-active relationship of the wire apron c and deckles 7t and thus insure the stream of ulp having a uniform solid constituent. llfir passing over the vacuum box at and from between the deckles h the now consolidated pulp strips pass under the ress roll a and delivery felt covered ro ere etc a twisting "machine along a drying device such as a steam yac eted conical shaped trpugh g to a reeling machine r. Tn case it is deslrable Figs. 2 and l, are a plan of the machine.

Til

upper side of the wire apron c is arranged till ulp to strengthen the tenltd form of device'which will feed into each of *mouhted on one of the rollers carrying the 30 the pulp streams a regulated weight of long fiber, for example; an endless band 8 driven at a constant lineal speed has a definite amount of the long fibers either hand or mechanically spread over a unit of its -length,-this strip ofmaterial formed wholly of long fibers 1s fed between the rollers t and consolidated thereby. Rollers u are provided and driven at such rate which shall be at least equal to the lineal speed of the wire apron c and in excess of the velocity of the rollers t that they produce a drawing action of the material between them and the said rollers t. Between the rollers t and the rollers u knives a are arranged to 'split'the web of material into a given number of strands w which after passing through the rollers u are led around rollers :12 and a2 and thereby diverted into the stream of pulp, rollers 31 and 3 being provided to press andmaintain the strands in their correct positions.

In order that the quantity of long fiber fed on to the endless band 8 may be regu lated, the movements of the said band 8 are indicated on the dial 2 the pointer of which is rotated by means of a chain or the like 2' running on and being driven by a sprocket said band 8.

Although the knives '1) shown inthedrawing are of the rotary type it is obvlous I may use parting knives of a stationary or reciprocating character if desired.

I claim l The method of manufacturing reinforced paper yarnwhich consists in simultaneously feeding-a mass of pulp and relatively long vegetable fibers onto the intake end of a papermaking machine, dividing the mass at or adjacent to its point of entry into a series ofstreams, malntaining the streams separatedthroughout their passage through the machineto produce a number of narrow paper bands'having deckle edges, subjecting the bands to pressure to consolidate them and to incorporate the fiber therewith, twisting the hands into round threads, and finally drying the product.

' In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES THAME.

Witnesses R. W. JAMES, Cms. R. BAnLoUon. 

